Maybe short abbreviations omitting Angel of part. Like Mar for AoMarkmanship, Ber for Berserk, Dar, Imp, LTr (or sth like that), Has, Pur and finally Mas for Angel of Masochism :> (didn't get to it so far ;) )
So... [H|Ber|18] Damn Arch Viles!
I removed 'L' to make it even shorter. But what with character's level? Maybe something like clvl/dlvl, so:
[H|Ber|8/18] Damn Arch Viles!
What do you think?